How to distinguish the material of the food bag

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Because food safety and human health are very important, material quality is very strict for food packaging. Not only did it need dust free production environment #ChinamanufacturerPackaging, but also non-toxic, tasteless food grade packaging materials.

The difference between food grade packaging materials and non food packaging materials is that they do not contain plastic additives, because plastic additives will release toxic substances during their use. Such as: PVC packaging in the plasticizer, old PVC preservative film and so on #12ColorPackaging.

vacuum pouchs for potato chips(1)

Food grade packaging materials are as follows:

PET film is transparent, hard material, high temperature resistant, good printing material, crisp when it nip by hand. It can be used for the outer packaging of food bags.

PE film has good extension performance, good pulling force, soft feel, softer than CPP, and more transparent than CPP. It can be were divided into two species: milk white and transparent PE, like HDPE,LDPE,LLDPE.

PA film (nylon): PA material tenacity, good transparency and resistance to oxidation, piercing, easy to shrink and wrinkle, this material is suitable for the installation of similar bone products.

OPP thin film is hard, and can not be stretched, heat sealing is good, but the transparency is more general, the material is more brittle, and the feel is poor.

The material of CPP is soft and high temperature resistant, and the transparency of the film is worse than that of OPP, but it is better than that of PE. It can be used as a printing material, but it is not easy to print.

vacuum pouchs for potato chips(2)

Because of the special storage conditions requirements for food, in general, food packaging bags are laminate by mulply layers. In common, #UKCompositPackagingPouch the structure of vacuum packaging bags are as following:

Two layers of composite materials: PA/PE; PA/RCPP; PET/PE; PET/RCPP

Three layers of composite materials: PET/PA/PE; PET/AL/RCPP; PA/AL/RCPP

Four layer composite material: PET/PA/AL/RCPP

I am Alice. Flexi packaging company, choice Yington #ChinamanufactoryPackaging.

Email:missalicesu@hotmail.com

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